UART MUX 4 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.
- Author : Nenad Filipovic
- Date : Apr 2023.
- Type : UART type
This example demonstrates the use of UART MUX 4 Click board by processing the incoming data and displaying them on the USB UART.
- MikroSDK.Board
- MikroSDK.Log
- Click.UARTMUX4
uartmux4_cfg_setup
Config Object Initialization function.
void uartmux4_cfg_setup ( uartmux4_cfg_t *cfg );
uartmux4_init
Initialization function.
err_t uartmux4_init ( uartmux4_t *ctx, uartmux4_cfg_t *cfg );
uartmux4_enable_uart1
UART MUX 4 enable the UART 1 function.
void uartmux4_enable_uart1 ( uartmux4_t *ctx );
uartmux4_enable_uart2
UART MUX 4 enable the UART 2 function.
void uartmux4_enable_uart2 ( uartmux4_t *ctx );
Initializes the UART driver and additional pins.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
uartmux4_cfg_t uartmux4_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
uartmux4_cfg_setup( &uartmux4_cfg );
UARTMUX4_MAP_MIKROBUS( uartmux4_cfg, MIKROBUS_1 );
if ( UART_ERROR == uartmux4_init( &uartmux4, &uartmux4_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
}
Writes demo message, echos it back, processes all incoming data and displays them on the USB UART.
void application_task ( void )
{
log_printf( &logger, " ---------------- \r\n" );
log_printf( &logger, " UART 1 demo message:\r\n" );
uartmux4_enable_uart1( &uartmux4 );
Delay_ms ( 100 );
for ( uint8_t n_cnt = 0; n_cnt < 5; n_cnt++ )
{
if ( uartmux4_generic_write ( &uartmux4, DEMO_MESSAGE, sizeof( DEMO_MESSAGE ) ) )
{
if ( uartmux4_generic_read( &uartmux4, app_buf, sizeof( DEMO_MESSAGE ) ) )
{
log_printf( &logger, "%s", app_buf );
}
}
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}
log_printf( &logger, " ---------------- \r\n" );
log_printf( &logger, " UART 2 demo message:\r\n" );
uartmux4_enable_uart1( &uartmux4 );
Delay_ms ( 100 );
for ( uint8_t n_cnt = 0; n_cnt < 5; n_cnt++ )
{
if ( uartmux4_generic_write ( &uartmux4, DEMO_MESSAGE, sizeof( DEMO_MESSAGE ) ) )
{
if ( uartmux4_generic_read( &uartmux4, app_buf, sizeof( DEMO_MESSAGE ) ) )
{
log_printf( &logger, "%s", app_buf );
}
}
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}
}
This Click board can be interfaced and monitored in two ways:
- Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
- UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.